1. Lesson (1-1): Points, Lines, and Planes_ p:6

2. . C 1- Point * It is a location or a dot * It is named by a capital letter. B. A

3. 2- Line * It is made up of 2 points and has no thickness or width * It is named in 2 ways: a) by a small letter and an arrow head b) by any 2 points on it and an arrow head.B.B.A.A u - We can name the line by:

4. 3- Collinear Points * Points on the same line.B.B.A.A u - examples:.D.D.E.E.F.F * A, B, D, E are collinear * A, D, F are not collinear

5. 4- Plane * Any flat surface with length and width, made up of points * It is named by an italicized capital letter P. A. B. C We have: - Plane P -- Points A, B, C are on this plane

6. 5- Intersection of lines and planes * Any 2 lines intersect at exactly 1 point m n.A.A

7. * Any 2 planes intersect at exactly 1 line P R.A.A B. P and R intersect at line AB

8. 6- Coplanar lines * Lines in the same plane u - examples: * Lines u, v, w are coplanar * Lines u, v, y are not coplanar X v w y